Scalable electrochemical synthesis of diaryliodonium salts
作者:Mohamed Elsherbini、Wesley J. Moran
DOI:10.1039/d1ob00457c
日期:——
Cyclic and acyclic diaryliodonium are synthesised by anodic oxidation of iodobiaryls and iodoarene/arene mixtures, respectively, in a simple undivided electrolysis cell in MeCN–HFIP–TfOH without any added electrolyte salts. This atom efficient process does not require chemical oxidants and generates no chemical waste. More than 30 cyclic and acyclic diaryliodoniumsalts with different substitution
环状和非环状二芳基碘鎓分别通过碘联芳基和碘代芳烃/芳烃混合物的阳极氧化合成,在 MeCN-HFIP-TfOH 的简单未分隔电解池中,不添加任何电解质盐。这种原子效率的过程不需要化学氧化剂,也不会产生化学废物。以非常好的收率制备了 30 多种具有不同取代模式的环状和非环状二芳基碘鎓盐。将反应放大至 10 mmol 规模,在不到 3 小时内得到超过 4 克的二苯并[ b , d ]碘-5-鎓三氟甲磺酸盐 (>95%)。大规模实验的溶剂混合物被回收(>97%)并循环多次,收率没有显着降低。
Cu-Catalyzed tandem <i>N</i>-arylation of phthalhydrazides with cyclic iodoniums to yield dihydrobenzo[<i>c</i>]cinnolines
作者:Rongrong Xie、Hongxu Lv、Xiuqing Ye、Xiangfei Kong、Shiqing Li
DOI:10.1039/d0ob00894j
日期:——
pharmacological properties. Herein, we investigate a Cu-catalyzed tandem N-arylation reaction of phthalhydrazides with cyclic iodonium salts to construct dihydrobenzo[c]cinnoline derivatives. Various iodonium salts, such as symmetrical, unsymmetrical, aryl–aryl, and aryl–heteroaryl ones, could react with phthalhydrazides smoothly and give the title products in moderate to high yields. Moreover, the –NH2 group
二氢辛啉具有明显的药理特性。本文中,我们研究了邻苯二甲酰肼与环碘鎓盐的Cu催化串联N-芳基化反应,以构建二氢苯并[ c ]肉桂酸衍生物。各种碘鎓盐,例如对称,不对称,芳基-芳基和芳基-杂芳基盐,都可以与邻苯二甲酰肼平稳反应,并以中等至高收率得到标题产物。此外,在以前的报道中,–NH 2基团已经被环状碘鎓盐二芳基化以形成咔唑,在这项工作中也被很好地耐受。
Palladium-catalyzed cyclocarbonylation of cyclic diaryliodoniums: Synthesis of fluorenones
作者:Li Liu、Jian Qiang、Shuhua Bai、Yang Li、Chunbao Miao、Jian Li
DOI:10.1002/aoc.3817
日期:2017.12
An efficient approach to the synthesis of fluorenones via the palladium‐catalyzed cyclocarbonylation of cyclic diaryliodoniums was developed. Our route enables facile access to fluorenones with various substituents in modest to high yields.
Heptagon-embedded polycyclicaromatic dicarboximides were developed as new push–pull fluorescent dyes through palladium-catalysed [4+3] annulation followed by nucleophilic substitution. The introduction of a seven-membered ring in these push–pull systems can efficiently modulate the optical properties leading to an enhancement of the fluorescence quantum yields up to 0.93 with color tunable emission covering
Palladium-Catalyzed C(sp<sup>3</sup>)–H Biarylation of 8-Methyl Quinolines with Cyclic Diaryliodonium Salts to Access Functionalized Biaryls and Fluorene Derivatives
作者:Naveen Kumar Maurya、Suman Yadav、Dhananjay Chaudhary、Dharmendra Kumar、Km Ishu、Malleswara Rao Kuram
DOI:10.1021/acs.joc.2c01405
日期:2022.11.4
diaryliodonium salts as biarylating agents in the C(sp3)–H functionalization using 8-methyl quinoline as the intrinsic directing group. The oxidant-free reaction produces a vast array of the biarylated products with iodo functionality that can be further functionalized. Additionally, intramolecular C(sp3)–H functionalization in a stepwise manner under palladium-catalyzed conditions produced the fluorene derivatives